I am the fire of digestion in the bodies of all living entities, and I join with the air of life, outgoing and incoming, to digest the four kinds of foodstuff.
Author Name:-Sri Ramanuja
15.14 Becoming the ‘digestive fire’, or the fire of digestion, I function within the bodies of all living creatures. In union with various activities of ‘inward and outward breaths’, I digest the ‘four kinds of food’ eaten by individuals. These consist of foods to be chewed, sucked, licked and drunk. The Supreme Person who has the Soma, digestive fire etc., as his glory (Vibhuti) is here equated with Him by means of co-ordinate predication in the verses ‘Becoming the juicy Soma’ and ‘Becoming the digestive fire’. He now sets forth the reason for equating these glories with Himself.
Author Name:-Sri Adi Shankaracharya
Sri Adi Shankaracharya
15.14 Bhutva, taking the form of; vaisvanarah, Vaisvanara, the fire in the stomach, mentioned in such Upanisadic texts as, ‘This fire that is within man and digests the food (that is eaten) is Vaisvanara’ (Br. 5.9.1); becoming that Vaisvanara, and asritah, residing in, entering; deham, the bodies; praninam, of creatures, of living beings; aham, I Myself; prana-apana-samayuktah, in association [i.e. kindled, inflamed, by Prana and Apana.] with Prana and Apana; [Prana-that vital force which goes upward and has its seat really in the heart (cf. Tai. Br. 188.8.131.52), but it said to be located at the tip of the nose since its presence is directly felt there. Apana-that vital force which goes downward, below the navel, and has its seat in the organs of excertion.-Tr.] pacami, digest; the caturvidham, four kinds of; annam, food-those that are eaten by masticating, swallowing, sucking and licking. The eater is the fire called Vaisvanara, and the eaten is the food Soma. One who looks upon all that there is as being these two, fire and Soma, is not affected by the impurity of food. Further,
Author Name:-Sri Madhvacharya
The Supreme Lord Krishna discloses that He is abiding in the physical body as the fire of digestion known as vaisvanarah assisting in the sustenance of all jivas or embodied beings.